Mkhitaryan joined United from Borussia Dortmund in a £27.3m deal during the summer, but has made just one start for the club in all competitions since.
The 27-year-old has often been left out of the matchday squad entirely by Jose Mourinho, but the Armenia international is determined to impress his manager.
“I know I can succeed at Manchester United, and I want to show everyone that I deserve to be a key player in this team and this league. Today I don’t have enough playing time, so I have to do my best so the coaching staff give me the chance to play,” he told the Armenian Football Federation’s official website.
“There are no disappointments, just challenges. I never give up when I encounter obstacles in my way. I just continue going until I reach my career objectives. Regarding Jose Mourinho, I hope I can learn a lot from him – he is a coach with a fantastic record. I saw the move to Manchester United as an opportunity to grow as a player and as a person.
“It was definitely not the salary that made me join Manchester United, I went for football reasons – for the history of the club, the fans and the coach because he is one of the best in the world. The EPL is the best league in the world and it gives me something different, a new challenge. I think I can become stronger by playing there.”
Mkhitaryan has been on the field for just 105 minutes in the Premier League this season.